The Mexican petunia ( Ruellia rudiflora ) is a lovely addition to the garden but has a tendency to take over once it becomes base . It promptly self - germ and has been classified asan invasive plantin the country of Florida . A perennial , the Mexican petunia grows to 3 feet in superlative and carry wanton majestic flowers . It is especially low-down - criminal maintenance , making it great for initiate . Mexican petunia are hardy to U.S. Department of Agriculture Hardiness zone 8 through 10 and requires a full - sun location and a strong climate .
Step 1
Water the Mexican petunia only when the soil is dry . weewee the soil to a depth of 10 in and allow it to dry out before watering again .
Step 2
Fertilize the genus Petunia with a 10 - 10 - 10 formula in early springiness . practice the amount specify on the fertiliser label and apply it to the ground around the plant .
Step 3
Prune back the stems to half their length after the flowering menstruation to remind the Mexican petunia to re - peak .
Step 4
deal - pull new seedlings to keep the Mexican petunia from invading the rest of the garden . Wait until they bring on efflorescence if you are unsure if what you are finding is really a Mexican genus Petunia seedling . One agency to identify the seedling is by the leaves . Although there are several Mexican petunia cultivars , the shape of their leaves is generally the same : they are longer than they are wide and resemble the adult ’s leave , only smaller .
Long Does It Take Mexican Petunias To Grow?
Mexican petunia , also call desert petunia , establishes itself quickly when you start with a greenhouse - grow seedling or young plant life . It generally produces group of strong , semi - woody haunt about 3 feet tall that bear attractive foliage and bring on flowers within a month or two . Mexican petunia produces seeds that germinate readily and turn into works identical to the parent . Modern seedling raise well if their soil is observe moist , but they may only produce a few previous - time of year flowers during the first year . Although it grows best in full sun , it can also handle some shade , but this may reduce flowering . you’re able to grow Mexican petunia as a potted plant , either outdoors or indoors in a bright , sunny spot .
